/*
 * Copyright 2010 dev7.jp
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jp.dev7.ao;

import java.sql.SQLException;

import jp.co.apl.haven.ao.exception.DaoException;
import net.java.ao.EntityManager;
import net.java.ao.Transaction;

public abstract class Tx {

    public static interface Execution<RESULT> {
        RESULT execute();
    }

    public static <RESULT> RESULT execute(EntityManager manager,
            final Execution<RESULT> execution) {
        try {

            return new Transaction<RESULT>(manager) {
                @Override
                protected RESULT run() throws SQLException {
                    return execution.execute();
                }
            }.execute();

        } catch (SQLException e) {
            throw new DaoException(e);
        }
    }
}
